http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-644309-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_7995660796c354a2881371a7406bf6dd |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10S204-03 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01B11-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C25B1-26 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C25B1-26 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01B11-10 |
| filingDate | 1947-01-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_532639cb7753cf385633c02d4fb3f8ce |
| publicationDate | 1950-10-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-644309-A |
| titleOfInvention | Manufacture of alkali metal chlorites starting from chlorine dioxide |
| abstract | 644,309. Electrolytic manufacture of alkalimetal chlorites. SOLVAY & CIE. Jan. 7, 1947, Nos. 567 and 568. Convention dates, Jan. 31, 1946 and July 19, 1946. [Class 41] An electrolytic process of manufacture of alkali-metal chlorites comprises reaction between an alkali metal hydroxide and chlorous acid, the acid being obtained by cathodic reduction of chlorine dioxide and caused to react with the hydroxide in proximity to the cathode of the electrolyte cell where the chlorous acid has been formed. In modifications of the invention the reaction is between chlorine dioxide and an alkali-metal amalgam or an alkali-metal salt. In the arrangement shown in Fig. 1, sodium hydroxide is introduced into the anode compartment A and passed through a diaphragm D into the cathode compartment C to which chlorine dioxide is supplied through a cathode K in the form of a diffuser of graphite or other porous material. Oxygen is freed at the anode. In the arrangement shown in Fig. 3, an alkali metal amalgam is supplied to the bottom of a compartment A which is separated by a diaphragm D from a compartment C supplied with chlorine dioxide through a porous member K. This member is connected by a conductor E to the amalgam, the cell becoming a voltaic cell in which the amalgam is decomposed and alkali-metal chlorite is produced. In the arrangement shown in Fig. 5, the cathode solution is circulated by a pump M between the cathode compartment C of an electrolytic cell and a scrubber B on which the solution is saturated with chlorine dioxide. Brine enters the anode compartment A at the bottom and overflows at the top. Part of the catholyte is removed through a pipe P and the chlorine dioxide therein is separated from alkali-metal salts by known means, for example evaporation or crystallization. In the process described the catholyte may be supplied with hydrogen peroxide or acid to ensure that no chlorate is formed. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2926996-A |
| priorityDate | 1946-01-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 30.